[U-Boot] MPC8347 Initial Boot problems

[Simon Glass]

Hi Austin,

On 20 July 2016 at 14:21, Gardner, Austin (GE Transportation)
<austin.gardner at ge.com> wrote:
> Simon,
>
> Thanks for the response!
>
> I do not have any debug facilities unfortunately, and I don't think it is a board fault either. The text base you're referring to is "CONFIG_SYS_TEXT_BASE" correct? Originally the value for this for the MPC8349EMDS board is: 0xFE000000, but the docs for our MPC8347 board says that the boot loader needs to be at location: 0xFF800000, possibly at 0xFF800100 for issues with an offset.
>
> Further research has lead me to believe that I need to use UBoot 1.1.3 due to the BSP documentation stating that it uses is 1.1.3, and I think because it was configured for it, we have to use it. I have run into many problems trying to make a binary for the 1.1.3. When I use the most recent version of the ELDK I get a binary of around 4.5GBs, and when I try and use an earlier version of the ELDK (3.1.1) I get a segmentation fault immediately when I try and configure it.
>
> Any ideas?

I'm really not sure about this. The large binary suggests that you
have code/data at 0 and at 0xfe000000, which seems wrong. So the image
is trying to bridge the gap and ends up being huge.

If you have a working image from an old U-Boot and can build it from
source, that helps a lot, since you can compare settings, etc. Sorry I
can't help more...

Regards,
Simon

>
> Thanks,
> Austin
>
> -----Original Message-----
> From: sjg at google.com [mailto:sjg at google.com] On Behalf Of Simon Glass
> Sent: Sunday, July 17, 2016 10:15 AM
> To: Gardner, Austin (GE Transportation) <austin.gardner at ge.com>
> Cc: u-boot at lists.denx.de
> Subject: EXT: Re: [U-Boot] MPC8347 Initial Boot problems
>
> Hi,
>
> On 30 June 2016 at 12:40, Gardner, Austin (GE Transportation) <austin.gardner at ge.com> wrote:
>> Still hoping for a response. I have not had any luck trying to get this up and running. Any advice would be very helpful.
>>
>
> Do you have any debug facilities? Maybe a BDI2000? It could be a board fault or something wrong with text base, etc.
>
>> Thanks,
>> Austin
>>
>> From: Gardner, Austin (GE Transportation)
>> Sent: Friday, June 17, 2016 8:57 AM
>> To: 'u-boot at lists.denx.de' <u-boot at lists.denx.de>
>> Subject: MPC8347 Initial Boot problems
>>
>> Hello,
>>
>> I am currently trying to get my MPC8347EA board up and running by porting the MPC8349EMDS configuration that is currently available. This is my first time working with uboot, so naturally I am having some issues. My issue is that I can't get any response from the board after we flash it with the binary image. I don't know if I am flashing it in the wrong location, or if it is because the configurations in the header files that I changed are wrong. I have tried flashing it in various locations such as start of memory, CONFIG_SYS_TEXT_BASE location (changed to our needs of 0xFF8000000), etc. I also have changed a lot of the memory configurations from the MPC8349EMDS such as the timing configs, ddrlawbar and ddrlawar, sdram configs and modes, etc.
>>
>> After getting the uboot to actually launch to a command line, the next step will be to have it launch to our QNX os.
>>
>> Any help with this would be greatly appreciated. I apologize if I use the wrong terminology at any point, I am still very new to this.
>>
>> Thanks,
>> Austin
>
> Regards,
> Simon